/* ==========================================================================
   Wintertrack — "snow trail" design system
   Light, ruled, square-cornered. Slab-serif headings over a sans body.
   No cards, no shadows, no rounded pills, no hover lift.
   ========================================================================== */

:root {
  --flurry-white: #F7F9FA;
  --flurry-dim: #EDF1F3;
  --glacier-blue: #6E93A8;
  --glacier-pale: #C9D7DF;
  --pine-shadow: #24463A;
  --beacon-warn: #C9553D;

  --rule-hair: rgba(36, 70, 58, 0.14);
  --rule-firm: rgba(36, 70, 58, 0.32);
  --rule-glacier: rgba(110, 147, 168, 0.34);

  --rail-w: 276px;
  --gutter: 30px;
  --measure: 68ch;

  --type-display: Bitter, Georgia, "Times New Roman", serif;
  --type-body: Rubik, system-ui, -apple-system, "Segoe UI", "Helvetica Neue", sans-serif;
  --type-mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--flurry-white);
  color: var(--pine-shadow);
  font-family: var(--type-body);
  font-size: 16px;
  line-height: 1.62;
  font-weight: 400;
}

img, svg { max-width: 100%; height: auto; display: block; }

a { color: var(--pine-shadow); text-decoration: none; border-bottom: 1px solid var(--rule-firm); }
a:hover, a:focus-visible { color: var(--beacon-warn); border-bottom-color: var(--beacon-warn); }
a:focus-visible { outline: 2px solid var(--beacon-warn); outline-offset: 2px; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 40;
  background: var(--pine-shadow); color: var(--flurry-white);
  padding: 10px 16px; border: 0;
}
.skip-link:focus { left: 8px; top: 8px; }

/* ------------------------------------------------------------ shell ----- */

.wt-shell {
  display: grid;
  grid-template-columns: var(--rail-w) minmax(0, 1fr);
  min-height: 100vh;
  align-items: start;
}

.wt-column { min-width: 0; display: flex; flex-direction: column; min-height: 100vh; }

/* ------------------------------------------------------- snowline bar --- */

.snowline-strip {
  border-bottom: 1px solid var(--rule-firm);
  background: var(--flurry-dim);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  padding: 7px var(--gutter);
  display: flex;
  flex-wrap: wrap;
  gap: 4px 22px;
  align-items: baseline;
  color: var(--pine-shadow);
}
.snowline-strip__tag {
  font-family: var(--type-display);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--beacon-warn);
}
.snowline-strip__item { color: rgba(36, 70, 58, 0.82); }
.snowline-strip__item b { font-weight: 600; }

/* ------------------------------------------------------------ ledge ----- */

.ledge-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px var(--gutter);
  border-bottom: 1px solid var(--rule-hair);
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(247, 249, 250, 0.96);
  backdrop-filter: saturate(140%) blur(4px);
}

.ledge-crumb {
  font-size: 12px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--glacier-blue);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.ledge-crumb a { border-bottom: 0; color: var(--glacier-blue); }
.ledge-crumb a:hover { color: var(--beacon-warn); }
.ledge-crumb span + span::before { content: " / "; color: var(--rule-firm); }

.ledge-spacer { flex: 1 1 auto; }

.ledge-search {
  display: flex;
  align-items: stretch;
  border: 1px solid var(--rule-firm);
  min-width: 240px;
}
.ledge-search input {
  flex: 1 1 auto;
  min-width: 0;
  border: 0;
  background: transparent;
  font: inherit;
  font-size: 13.5px;
  padding: 7px 10px;
  color: var(--pine-shadow);
}
.ledge-search input::placeholder { color: var(--glacier-blue); }
.ledge-search input:focus { outline: 2px solid var(--beacon-warn); outline-offset: -2px; }
.ledge-search button {
  border: 0;
  border-left: 1px solid var(--rule-firm);
  background: var(--flurry-dim);
  font: inherit;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0 12px;
  cursor: pointer;
  color: var(--pine-shadow);
}
.ledge-search button:hover { background: var(--beacon-warn); color: var(--flurry-white); }

.ledge-lang { font-size: 12.5px; letter-spacing: 0.06em; border-bottom: 0; white-space: nowrap; }
.ledge-lang::before { content: "⇄ "; color: var(--glacier-blue); }

/* ------------------------------------------------------------- rail ----- */

.ridge-rail {
  border-right: 1px solid var(--rule-firm);
  background: var(--flurry-dim);
  min-height: 100vh;
  padding: 18px 0 40px;
  position: sticky;
  top: 0;
  max-height: 100vh;
  overflow-y: auto;
  scrollbar-width: thin;
}

.ridge-rail__brand { padding: 0 20px 14px; border-bottom: 1px solid var(--rule-hair); }
.ridge-rail__brand a { border-bottom: 0; display: inline-block; }
.ridge-rail__tag {
  margin: 8px 0 0;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--glacier-blue);
}

.ridge-tree { margin: 0; padding: 14px 0 0; list-style: none; }
.ridge-tree__label {
  padding: 0 20px 8px;
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--glacier-blue);
}

.ridge-branch { border-bottom: 1px solid var(--rule-hair); }
.ridge-branch__head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 20px;
  cursor: pointer;
  font-family: var(--type-display);
  font-weight: 600;
  font-size: 14.5px;
  letter-spacing: 0.01em;
}
.ridge-branch__head a { border-bottom: 0; }
.ridge-branch__head::before {
  content: "▾";
  font-size: 9px;
  color: var(--glacier-blue);
  transition: transform 0.15s ease;
}
.ridge-branch[data-open="false"] > .ridge-branch__head::before { transform: rotate(-90deg); }
.ridge-branch[data-open="false"] > .ridge-twigs,
.ridge-branch[data-open="false"] > .ridge-sectors { display: none; }
.ridge-branch__count {
  margin-left: auto;
  font-family: var(--type-body);
  font-size: 11px;
  color: var(--glacier-blue);
  letter-spacing: 0.04em;
}

.ridge-sectors { margin: 0; padding: 0 0 4px; list-style: none; }
.ridge-sector { padding: 2px 20px 2px 34px; }
.ridge-sector__head {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--glacier-blue);
  padding: 6px 0 2px;
  border-bottom: 0;
}
.ridge-sector__head:hover { color: var(--beacon-warn); }

.ridge-twigs { margin: 0 0 6px; padding: 0; list-style: none; }
.ridge-twig { padding: 0 18px 0 34px; }
.ridge-twig a {
  display: flex;
  gap: 8px;
  align-items: baseline;
  padding: 4px 0;
  font-size: 13.5px;
  line-height: 1.4;
  border-bottom: 1px solid transparent;
}
.ridge-twig a:hover { border-bottom-color: var(--beacon-warn); }
.ridge-twig a[aria-current="page"] { color: var(--beacon-warn); font-weight: 500; }
.ridge-twig__km {
  margin-left: auto;
  font-family: var(--type-mono);
  font-size: 11px;
  color: var(--glacier-blue);
  white-space: nowrap;
}
.ridge-twig__grade {
  display: inline-block;
  width: 7px; height: 7px;
  border: 1px solid var(--glacier-blue);
  flex: 0 0 auto;
}
.ridge-twig__grade[data-d="easy"] { background: var(--flurry-white); }
.ridge-twig__grade[data-d="moderate"] { background: var(--glacier-pale); }
.ridge-twig__grade[data-d="challenging"] { background: var(--beacon-warn); border-color: var(--beacon-warn); }

.ridge-rail__foot {
  margin-top: 20px;
  padding: 14px 20px 0;
  border-top: 1px solid var(--rule-hair);
  font-size: 11.5px;
  color: var(--glacier-blue);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.ridge-rail__foot a { border-bottom: 0; color: var(--glacier-blue); }
.ridge-rail__foot a:hover { color: var(--beacon-warn); }

/* mobile rail toggle — pure CSS, no JS required */
.rail-switch { position: absolute; opacity: 0; pointer-events: none; }
.ledge-burger { display: none; }

@media (max-width: 900px) {
  .wt-shell { grid-template-columns: minmax(0, 1fr); }
  .ridge-rail {
    position: fixed;
    inset: 0 auto 0 0;
    width: min(86vw, var(--rail-w));
    z-index: 30;
    transform: translateX(-102%);
    transition: transform 0.18s ease;
    box-shadow: 1px 0 0 var(--rule-firm);
  }
  .rail-switch:checked ~ .wt-shell .ridge-rail { transform: none; }
  .rail-switch:checked ~ .wt-shell .rail-scrim { opacity: 1; pointer-events: auto; }
  .ledge-burger {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border: 1px solid var(--rule-firm);
    padding: 6px 10px;
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    cursor: pointer;
    user-select: none;
  }
  .ledge-burger::before {
    content: "";
    width: 14px; height: 8px;
    border-top: 1.5px solid var(--pine-shadow);
    border-bottom: 1.5px solid var(--pine-shadow);
  }
  .rail-scrim {
    position: fixed; inset: 0; z-index: 29;
    background: rgba(36, 70, 58, 0.28);
    opacity: 0; pointer-events: none;
    transition: opacity 0.18s ease;
  }
  .ledge-search { min-width: 0; flex: 1 1 auto; }
  :root { --gutter: 18px; }
}

/* ------------------------------------------------------------ main ------ */

.ridge-main { padding: 26px var(--gutter) 60px; flex: 1 0 auto; width: 100%; max-width: 1180px; }

/* --------------------------------------------------- telemetry badges --- */

.telemetry-rack {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border: 1px solid var(--rule-firm);
  margin: 0 0 22px;
}
.telemetry-badge {
  flex: 1 1 132px;
  border-right: 1px solid var(--rule-hair);
  padding: 10px 14px 11px;
  min-width: 0;
}
.telemetry-badge:last-child { border-right: 0; }
.telemetry-badge__key {
  display: block;
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--glacier-blue);
}
.telemetry-badge__val {
  display: block;
  font-family: var(--type-display);
  font-weight: 700;
  font-size: 21px;
  line-height: 1.25;
  margin-top: 2px;
}
.telemetry-badge__val small { font-family: var(--type-body); font-weight: 400; font-size: 12px; color: var(--glacier-blue); }
.telemetry-badge[data-d="challenging"] .telemetry-badge__val { color: var(--beacon-warn); }

/* --------------------------------------------------------- headings ----- */

.sheet-head { margin: 0 0 6px; font-family: var(--type-display); font-weight: 700; }
h1.sheet-head { font-size: clamp(26px, 3.4vw, 38px); line-height: 1.14; letter-spacing: -0.01em; }
h2.sheet-head { font-size: clamp(20px, 2.4vw, 26px); line-height: 1.2; }
h3.sheet-head { font-size: 17px; line-height: 1.3; }

.sheet-kicker {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--beacon-warn);
  margin: 0 0 8px;
}
/* The editorial credit sits in the stamp row beside the date, in the darker
   pine ink so it reads as a deliberate part of the sheet header. */
.sheet-byline { color: var(--pine-shadow); font-weight: 600; }
.sheet-lede {
  font-size: 17px;
  line-height: 1.6;
  max-width: var(--measure);
  color: rgba(36, 70, 58, 0.9);
  margin: 0 0 20px;
}

.prose { max-width: var(--measure); }
.prose p { margin: 0 0 14px; }

/* --------------------------------------------------------- map split ---- */

.map-split {
  display: grid;
  grid-template-columns: minmax(280px, 420px) minmax(0, 1fr);
  gap: 26px;
  align-items: start;
  margin: 6px 0 34px;
}
@media (max-width: 860px) { .map-split { grid-template-columns: minmax(0, 1fr); } }

.sketch-map { border: 1px solid var(--rule-firm); background: var(--flurry-white); }
.sketch-map svg { width: 100%; height: auto; }
.sketch-map__key {
  border-top: 1px solid var(--rule-hair);
  padding: 9px 12px;
  font-size: 11.5px;
  color: var(--glacier-blue);
  letter-spacing: 0.02em;
}
.sketch-map__block { cursor: pointer; }
.sketch-map__block polygon { fill: var(--flurry-white); stroke: var(--glacier-blue); stroke-width: 1.1; }
.sketch-map__block:hover polygon,
.sketch-map__block:focus-visible polygon { fill: var(--glacier-pale); }
.sketch-map__block text { font-family: var(--type-body); font-size: 11px; fill: var(--pine-shadow); pointer-events: none; }
.sketch-map__block[data-active="true"] polygon { fill: var(--glacier-pale); stroke: var(--beacon-warn); stroke-width: 1.6; }
.sketch-map__route { fill: none; stroke: var(--beacon-warn); stroke-width: 1.6; stroke-dasharray: 6 5; opacity: 0.85; }

.map-ledger { border-top: 2px solid var(--pine-shadow); }
/* Panel visibility, three fallbacks deep:
   JS present -> .is-shown wins;  no JS + a #hash -> :target;  no JS, no hash -> first panel. */
.map-ledger .map-panel { display: none; }
.map-ledger[data-js="on"] .map-panel.is-shown { display: block; }
.map-ledger:not([data-js="on"]):not(:has(.map-panel:target)) .map-panel:first-of-type { display: block; }
.map-ledger:not([data-js="on"]) .map-panel:target { display: block; }
.map-ledger:not([data-js="on"]):has(.map-panel:target) .map-panel:first-of-type { display: none; }
.map-panel__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 14px 0 10px;
  border-bottom: 1px solid var(--rule-firm);
}
.map-panel__title { font-family: var(--type-display); font-weight: 700; font-size: 22px; margin: 0; }
.map-panel__meta { font-size: 12px; color: var(--glacier-blue); letter-spacing: 0.04em; margin-left: auto; white-space: nowrap; }
.map-panel__blurb { font-size: 14.5px; margin: 14px 0 4px; color: rgba(36, 70, 58, 0.88); }

/* --------------------------------------------------------- route rows --- */

.route-sheet { list-style: none; margin: 0; padding: 0; }
.route-line { border-bottom: 1px solid var(--rule-hair); }
.route-line__link {
  display: grid;
  grid-template-columns: 8px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: baseline;
  padding: 11px 4px 11px 0;
  border-bottom: 0;
}
.route-line__link:hover { color: var(--beacon-warn); }
.route-line__name { font-family: var(--type-display); font-weight: 600; font-size: 16.5px; }
.route-line__region { display: block; font-family: var(--type-body); font-weight: 400; font-size: 11.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--glacier-blue); margin-top: 2px; }
.route-line__figures { font-family: var(--type-mono); font-size: 12.5px; color: rgba(36, 70, 58, 0.8); white-space: nowrap; }
.route-line__figures b { font-family: var(--type-body); font-weight: 600; }
.grade-dot { width: 8px; height: 8px; border: 1px solid var(--glacier-blue); margin-top: 6px; }
.grade-dot[data-d="easy"] { background: var(--flurry-white); }
.grade-dot[data-d="moderate"] { background: var(--glacier-pale); }
.grade-dot[data-d="challenging"] { background: var(--beacon-warn); border-color: var(--beacon-warn); }

/* ------------------------------------------------------ filter rail ----- */

.pick-rail {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border: 1px solid var(--rule-firm);
  margin: 0 0 18px;
}
.pick-rail a, .pick-rail span.pick-rail__static {
  padding: 7px 13px;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  border-bottom: 0;
  border-right: 1px solid var(--rule-hair);
}
.pick-rail a[aria-current="true"] { background: var(--pine-shadow); color: var(--flurry-white); }
.pick-rail span.pick-rail__static { color: var(--glacier-blue); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; background: var(--flurry-dim); }

/* --------------------------------------------------------- sections ----- */

.hollow-section { border-top: 1px solid var(--rule-firm); padding: 18px 0 4px; margin: 0 0 4px; }
.hollow-section__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 12px;
}
.hollow-section__num {
  font-family: var(--type-mono);
  font-size: 12px;
  color: var(--beacon-warn);
  letter-spacing: 0.08em;
}
.hollow-section__title { font-family: var(--type-display); font-weight: 700; font-size: 19px; margin: 0; }
.hollow-note { margin: 16px 0 4px; }
.hollow-note__head { font-family: var(--type-display); font-weight: 600; font-size: 15.5px; margin: 0 0 4px; color: var(--pine-shadow); }
.hollow-note__body { margin: 0; max-width: var(--measure); }

.gear-slate { list-style: none; margin: 0; padding: 0; max-width: var(--measure); }
.gear-slate li { display: flex; gap: 10px; padding: 6px 0; border-bottom: 1px solid var(--rule-hair); font-size: 14.5px; }
.gear-slate li::before {
  content: "";
  flex: 0 0 auto;
  width: 11px; height: 11px;
  margin-top: 6px;
  border: 1px solid var(--glacier-blue);
  background: var(--flurry-white);
}

.beacon-list { list-style: none; margin: 0 0 16px; padding: 0; max-width: var(--measure); }
.beacon-list li { padding: 9px 0 9px 14px; border-bottom: 1px solid var(--rule-hair); border-left: 2px solid var(--beacon-warn); font-size: 14.5px; }
.beacon-list__kind {
  display: inline-block;
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--beacon-warn);
  margin-right: 8px;
}

.step-line { list-style: none; counter-reset: stepline; margin: 0; padding: 0; max-width: var(--measure); }
.step-line li { counter-increment: stepline; display: grid; grid-template-columns: 30px minmax(0, 1fr); gap: 10px; padding: 9px 0; border-bottom: 1px solid var(--rule-hair); }
.step-line li::before {
  content: counter(stepline, decimal-leading-zero);
  font-family: var(--type-mono);
  font-size: 12px;
  color: var(--glacier-blue);
  padding-top: 3px;
}
.step-line b { display: block; font-family: var(--type-display); font-weight: 600; font-size: 15px; }
.step-line span { font-size: 14.5px; }

.ask-pair { border-top: 1px solid var(--rule-hair); padding: 12px 0 2px; max-width: var(--measure); }
.ask-pair dt { font-family: var(--type-display); font-weight: 600; font-size: 15.5px; }
.ask-pair dd { margin: 4px 0 12px; font-size: 14.5px; color: rgba(36, 70, 58, 0.88); }

.contour-plate { border: 1px solid var(--rule-firm); margin: 0 0 22px; }
.contour-plate figcaption {
  border-top: 1px solid var(--rule-hair);
  padding: 7px 12px;
  font-size: 11.5px;
  color: var(--glacier-blue);
  letter-spacing: 0.03em;
}

/* --------------------------------------------------------- relations ---- */

.kin-links { list-style: none; margin: 0; padding: 0; max-width: var(--measure); }
.kin-links li { padding: 7px 0; border-bottom: 1px solid var(--rule-hair); font-size: 15px; }
.kin-links a { border-bottom: 0; }
.kin-links a::after { content: " →"; color: var(--glacier-blue); }
.kin-links a:hover::after { color: var(--beacon-warn); }
.kin-links span { color: var(--glacier-blue); font-size: 12.5px; }

/* ------------------------------------------------------------ legal ----- */

.legal-sheet { max-width: var(--measure); }
.legal-sheet h2 { font-family: var(--type-display); font-size: 19px; margin: 26px 0 8px; }
.legal-sheet h3 { font-family: var(--type-display); font-size: 16px; margin: 20px 0 6px; }
.legal-sheet p, .legal-sheet li { font-size: 15px; }
.legal-sheet ul { padding-left: 20px; }
.legal-sheet .stamp { font-size: 12.5px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--glacier-blue); }

/* ----------------------------------------------------------- footer ----- */

.drift-foot {
  border-top: 1px solid var(--rule-firm);
  background: var(--flurry-dim);
  padding: 22px var(--gutter) 30px;
  font-size: 13px;
  color: rgba(36, 70, 58, 0.82);
}
.drift-foot__cols { display: flex; flex-wrap: wrap; gap: 10px 30px; align-items: baseline; }
.drift-foot a { border-bottom: 0; color: var(--pine-shadow); }
.drift-foot a:hover { color: var(--beacon-warn); }
.drift-foot__rule { margin: 14px 0 10px; border: 0; border-top: 1px solid var(--rule-hair); }
.drift-foot__fine { font-size: 11.5px; color: var(--glacier-blue); max-width: 90ch; }
.drift-foot__disclaimer { color: rgba(36, 70, 58, 0.82); }

/* ----------------------------------------------------------- search ----- */

.hit-sheet { list-style: none; margin: 18px 0 0; padding: 0; }
.hit-sheet li { border-bottom: 1px solid var(--rule-hair); padding: 10px 0; }
.hit-sheet b { font-family: var(--type-display); font-size: 16px; }
.hit-sheet em { display: block; font-style: normal; font-size: 12px; color: var(--glacier-blue); letter-spacing: 0.06em; text-transform: uppercase; }
.hit-note { font-size: 13px; color: var(--glacier-blue); }

/* ------------------------------------------------------------- misc ----- */

.pager-note {
  margin: 26px 0 0;
  padding: 12px 14px;
  border: 1px dashed var(--glacier-blue);
  font-size: 13.5px;
  color: rgba(36, 70, 58, 0.85);
  max-width: var(--measure);
}

.meta-strip { display: flex; flex-wrap: wrap; gap: 6px 26px; font-size: 12.5px; color: var(--glacier-blue); margin: 0 0 22px; letter-spacing: 0.03em; }
.meta-strip b { color: var(--pine-shadow); font-weight: 600; }

.rail-scrim { display: none; }
@media (max-width: 900px) { .rail-scrim { display: block; } }